Prosecutors today unveiled video from Aaron Hernandez's own home surveillance system during opening arguments at his murder trial to help support their claim that the former New England Patriots tight end killed semi-pro football player Odin Lloyd.

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The video, previously disclosed in court documents but only shown as a series of still images, showed Hernandez, now 25, and two associates returning to his North Attleboro, Massachusetts, house in the early morning hours of June 17, 2013 without Lloyd, prosecutors said. Other evidence showed Lloyd had been with them earlier, prosecutors alleged.

Hernandez, had tampered with the cameras but investigators were able to retrieve photographs, prosecutors previously claimed. Those images, they said, were recovered from 14 surveillance cameras in Hernandez's $1.2 million home.

Hernandez has pleaded not guilty to murdering Lloyd. His attorney, Michael Fee, insisted during opening arguments today that his client lacked intent to murder, and added that Hernandez did not turn off or tamper with the footage from his home surveillance system.

"The evidence will show that if Aaron Hernandez wanted to destroy the recordings on that video system, he could have," Fee said. "But he did not, because he had no reason to."